08.06.2015
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478 In general. the treatments applied before sMdi_ resulted in more':, injury to the &'Nss'el than did thole which were steeled first and then treated. This could be ~cted slnce most seminating seed are usually killed e.. 11y in the pres8ace of IIOst herbicid.s. Poor ItandS of SUIS in the treat aDd seed plots can be partially attributed to weather oonditions at the time of seeding. Abetter technique would have been to treat at different detes aad leed all plots at one time. .:L .. Under the oonditions prevailing tn these experiments • the .dipropalin ceused considuable injury to bent, fescue, and bl_srass seedlings. 'rbi' wal true ~n the pre-seeding aDd po.t-seeding appl~tions. As ~ndica~ by the data. t~ere W8I little eff.c~ o~ the other tr.~s on srass stands. . . .; ~ . ., ;:'. ,-. . . !'rom thes.studies it appears that seedins p-alSes are not advere1ey affected by the'more cllDIOnly weed·lJre __ rseac. et:llbp'a31 control treatll8llts if they are three weeks old 01'1101'8. On the otberUDd, s.&dins SOOD after application may not be sclv1sabl.~ . - ", ... .\
479 '!HEEFFECTOJ1"CERTAINPREEMEqNCE CHEMICALSONGRASS~ATION ANDSFlElllLINGRASSES "f),' 1 J. M. Mch, B. R. Flem1Bg, A. E. Dudeck ~ G. J., Shoop . The objectives of thj,s lJ:twiywere to de~m;ine the effect of several preemergence chemicals on seedlings of tht'ee major turfgrass species 'Whenapplied at varying intervals followiq Beeding, and their· effect on the germ1llation of tbeee: grasses 'WheneNded at varying intervals following applica tiona :.'} Mater:Lals ~ Methods This stud;r was conduo~~ at University~k, Pennsylvania on HagerstownsUt loam soU with a pH of 6.3 and med:lumlevels of avaUable phosp.orous and potash. Initiation of the study was delayed until la te spring due to inclement weather. The area was trea ted with hot methyl bromide at 1.2 pounds per 100 square feet in late May 1961, following root zone tillage, to eliminate any undClSired plants during the growing seaSal. Prior to ~J, seedbed prePQJlltian, 45 1bs. of 10-5-5 (70% ureaform and 30% act;tvated sludge ni~en) per M was applied. Turf was maintained at lilt height of clIt, throughout the season with all clippings removed. Irrigation was a:flllied for establishme~t and maintenance, however, the turf: was allowed t,,,..mowmoisture stress prior to maintexumce watering to a:llow any possib:J;, trea1ment effects to be expressed. Post-emergence Test. On June 20, 1961 cOnunOnKentucky bluegrass, creeping red fescue and Astoria bent mre"eded in individual 3 x 63 foot adjacent strips at 2, 4 and 1 pound p~ M, respectively. Three foot sod strips were placed parallel to eacl;l(series of seeded strips to facilitate mulch removal, irription, etc. ~:experimental design ""'s a triple replicated randomized block with trea1m~t dates, grass species, and chemical trea1ments the respective factors. Chemical trea1ments lIilI'f awlied in J,x9 foot strips perpendicular to the grass strips resu1~ in 3 x 3 foot 1a'eatments an each grass species. Treatments were madeqat 6, 38, 69 and 190 da,ys following seedimg. Preemergence Test. '1he'above chemicalt.reatments were applied at similar rates ana piOtSizes toa prepared seedbed on June 26. All plots were mulched w:1,th,first-cut fo~ge at approximate~ 100 pounds per M to assimilate a turf cover condition.nd to, preventllflJterial movement and exposure to light. The three grass species were Meded at 0, 32, 63 and' 93 1 Assistant Professor; Instruotor and Graduata J\.msistants, respectively. Agrono~ Department, Pennsy1vania State University.
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PRESENTANDFUTtJU OF AQUATIC'. WIlD
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Complete reports from 12 Nor~heaste
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The reawakening in aquatic weed con
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,10.1ng -2,4.,;iD (19), 2,4~5.T (4)
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9 The Role of the State in Res idue
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,., 1'4 keep developmental work in
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In addition to a review of field an
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State workers have to consider resi
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The vigorous regrowth of quackgrass
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during t,he sUllllller.is l,ower ll
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5. llslapon and other chlorine,ted
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23 • ·i INTRODUCTION: !!'he Bear
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Some damage to runners rssul ted fr
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27 CELLSTRUCTUREANDPLANTGROWTHCRMON
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pel'fQ.,..d,-.ear17M1932. that the
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a copious precipitate deposits afte
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B) A general review of the subject
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This narrative of ineptitude must b
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does Jo run a recreational facility
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Another pote1U:ialuse for chemicals
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Newapproaches in the use of herbici
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43 sentence would bear this out". T
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More and more each year since the a
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11. Rice, E. J. The effects of cUlt
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PFSI'ICIDESUSED - - - - - - - - - -
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__..:I whether or not these apparen
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Dosage. Ib./acre Dimethyl tetrachlo
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~ ~_~ __ L L Table 2. Weed Susceoti
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- - - - - - - - ~, - - - - --- - -
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Table 7.. Weed Control in :l:!c,Ql1
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Table '1. Rat.1lISstI 'Of carrot an
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H , 'ta~l!. g,._~e~_O!~ut~• .:.:.
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65 plant press and dried in a f~ced
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67 Tablet. 'lIi! EFFECT'or AN'INO'l
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69 THE INFLUENCE JIt P.I!ll'ROLEUM
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71 1 CDEC(Ee) 2 " " 3 4 " 5 " " 6 7
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!a~l~ 1._ ~!:.c!: :!!1~hJl!:e.::m~d
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75 EFFECT;OFCOMPOSITIONANDVOLUMEOF
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A LOGARITHMICSPRAlERFORSMALLPLCflSY
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79 Do~ Calculations The actual init
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Selective Herbicides for Several Cr
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83 Susceptible weeds Tolerant weeds
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85 Marion Market 9 9 9 9 9 9 9 9 Da
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Table 5. Bai
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weeding of Lima Bean. With Chemical
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EFFECTOF HERBICIDESONQUALITYANDYIEL
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Results Date treated: 9/6/61 Soil m
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95 Date planted: 915/61 Date treate
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Table 3. Yield Data on Hanover and
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Weeding of Carrots With 'pre-lilanU
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101 WEEDCONTROLSTUDIESIN SEElED ONI
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Weather conditions at the two locat
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In contrast to the damage noted in
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107 Literature Cited 1. Althaus. R.
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Table 1. Weed control: stand of pla
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Results and Discussion. The data, p
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CIPO, Vegadex, and Randox Singly or
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Table 1•. Wa. control, stand of p
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'Ihree experiments were conducted i
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a- Table 2_"COIIlpartsonof' Several
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fJ Table 3. CcBparison of Several.
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c
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Table 1. Seeding and Weed Counts on
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WEEDCONTROLANDTHE IMPROVEMENT OF SE
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Following emergence of the tomato s
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indicates that several of the treat
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DISCUSSIONOF RESULTS Transplant Tom
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harvest was covered with weeds, and
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An additional 2 years of tests on f
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~ Table 2 .--l Average Number and P
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~ Table 4 Total Yields in Number an
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"" ~ Table 6 Bvalu~t1.on of S&l~nto
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of weed eoneee I without inj ury 't
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1. Associate Research Specialist in
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Stulllll&ry A study was lh1tlatedto
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Table 2. The residual effects of se
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FURTHEROBSERVATIONS ONCONTROL OF TH
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Table 3 - Mean per cent brake contr
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lAssociate Research Spec1alist in W
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PRE-E~mRGENCE WEEDCONTROLTEST IN RE
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161 Table 2. Tolerance of Beets and
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163 Results generally were good wee
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USE OF GRANULAR CHl!H[CALAPPLICATOR
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u.s. #1 potatoes and weed control e
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0' ~ Table 2. Pre-emergent weed con
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Table 3. Post-hilling weed control
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~/Pe.nt>:r lITn. h.7(L T1o:oTl.,:r+
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In table 2 are presettted weed a*1'
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Since rec1root is only one of the I
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w.l.th 3 and 4 Ibs. ot Randox per a
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181 CONTROLOF ANNUALWEEDSIN pOTATOE
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The following comments on the vario
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185 S\:U!U!1fryand ConclWtlon No he
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187 Table 2. Potato YIelds Followin
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Residue analysis of potatoes treate
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soil temperatures at the time the m
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( ( ~able 2. Effect of Several Che~
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195 PROBLEMSIN THEAPPLICATIONOF HER
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197 scale tests on 2 cOlJllllercial
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l!!!! Experiment A factorial experi
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frOlll plot. at .horter i*nalt (~ t
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6.50 Table 1. Effe,ct of p"e- an
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205 EVALUATION0It' DACTHAL * HERBIC
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The 1959 and 1960 replicated field
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209 TABLEII Average Weed Cont~l Exh
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Where the weed eompleJl;conststs of
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...... 1.67, 213 Table 1. Effect of
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215 Table 2. Bffect of pre-plant he
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.217 Pive pre-plant herbicide. were
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219 Table 1. Effect of pre-p1anthel
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Table 2. tilat' of pre-plantbftb.tc
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l EVALUATIONOF THREEHERBICIDESONPnE
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TABLE2. TIll HIGHESTlATEOFHERBICIDE
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Because of the lush growth of quack
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Table 2. Effects of Herbicides on Q
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Table 3. Effects of Herbicides on A
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233 The inhibitory activity was ass
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non-polar solvents. Table 5 shows t
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237 Figure I Bioassay of cbrOlll4to
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239 Weed Control and Residual Effec
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Rototilling was done in June·' SO
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243 in the spring of 1961 preceedin
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WEEDCONTROL.AR
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Li£erature Cited 1. Chappell. W. E
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Tl'eatments ghing un.811~!8facto%'y
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Table 1. Designa t ion Am1l:)en .\
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Table 3. Percent Broadleat Weed Con
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,255 CONTROLOF ANNUALWlmDSIN swDT C
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of Casoron per acre was statistical
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~.-! _ 1.37 ~ Table 2. Sweet Corn Y
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Table 4. Peroent Control ot Ann.ual
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EVALUATIONOF FIVE _~p>I!:S FOR KILL
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265 STRAWBERRY HERBICIDEINVESTIGATI
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267 Table 2. Eftect Of'herbicidet~e
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'h ", 4. Tillam lOG at 5 lb/A a.i.
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Asparagus The results of weed contr
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273 TABLEII. ~1EED CONTROLANDYIELD
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~ C'l TABLE tv. lIEE» OON1T..OLAND
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WEEDCONTROLIN TRANSPLANT TOMATOES (
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279 ·QUACKGRASSCONTROL S.M. Raleig
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281 table II. The control of:'4oaek
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no cultivation during the growing s
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SummaryandConclu.1Qp' 1. A quackgra
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If or where farmer acceptance of a
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,~, ~ Tab1.e II. Chemical. Treatmen
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so11 per plot at each sampling date
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418' 293 Table III Main Eff,ects of
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Table V, }nt ...... e..• ,fa~, I;
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plots showed smaller decreases with
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FURTHEREVALUmONor HERBICIDESFal· W
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301 In the SUIIIIIlf)1' seeding, th
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The results were similar to those o
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In another experiment, loam soil wa
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apparently due to severe competitio
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ab1e 2. Average dry weight of corn
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311 The most strllt~Mrr~ct. ~fiIIJI
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313 RE9lfm'$~lfI)DI3CtlSSION '1.",
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315 LrrERATURECITED 1. Fertig, Stan
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.~ pattern following applications o
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Ratings at the time of'gJ;Vllst; al
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THERESPONSEOF NUTGRASS TO HERBIC~I)
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'\.......- TABLE2. Ratings of Nutgr
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All treatments produced si~1f~c~tly
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A 327 WEBDe
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. Eli'FECTSali' WEEDSON YIELD AND"G
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Pollen Maturity: ",l. ,. Broadleaf
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'--' The applicators were tested un
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335 Figure 1. The effeetof partic1e
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337 SRFeader 1 On this spreader onl
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Table 4. The effect of speed, p~~cl
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Table 1: Herbicidal treatments used
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·000 .000, I II ! WEEDCONTROLRATIN
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2.5000 CORNINJURY EXPRESSEDAS SQUAR
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347 1. 2. Danielson. l , ;4. L. Ef~
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',-- 34~ 3-(3 ..4-Dichlorophenyl)-1
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weed control with adequate safety t
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Untreated Table 2. Directed Post-E"
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.s .... __ Table 7. Pre-Emel'ae~eWe
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experiment is reported herE!. Trifl
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Results are given. in Table 4~J'Rot
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In Princeton fine sand, tritlupalin
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Included in the lima. bean test wer
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Table 1. The Effects ofS8veral form
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Table 3. The effects of several for
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369 Table 5. The effects of sev~ral
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• ~ : .• \ • ' -' ..,,:- ',-"
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Heights of barley were significantl
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Table 2. The effe,cts of s~\I'~ral
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Table 4. 377 The effects of aevel8.
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,:' A PROGRESSREPORTONCOMIo!ERCIAL
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4. Undesirable dead stem.,lio not r
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areas under service conditionsa~ va
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We ,prpbablyhave no speeie of g~owt
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control. At the end of the third ye
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initial defoliation was evident lat
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OBJECTIVE In 1958 an experiment was
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Replicates DlO 810 I 2.0 0.5 II 1.5
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DISCUSSION One Year After Applicati
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1. Button, E.F. Bndwrfg'h~';J .L. ,
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399 The treatment consisted of appl
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401 FIELD PROCEDURES Although. the
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403 In the light of these data it a
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405 ...·1!MLE I SAMPLECHARACTERIST
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407 , '.". '.·',',~'l~rL,i;'. "\"
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dltterent l"atespacaoreand"~"at thr
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411 RESULTS ireatmentettect was det
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, 413 ;. ' "1 ' "':j " • made wit
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( ( . Table 3. Effectiveness on Spe
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417 FENURQlt,A PROMISINGNEWTOOL FOR
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There are a number of reaso~ for un
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.n_ots, "'hhin a few months after:
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sater method ot tree-killing close
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Material ~izone is a,mixedf~g.. t w
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427 On November 16, 1961, at the en
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CHBMI-THINNINGWITH,AIrlINES IN THED
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These tests show once aaaiJithe nee
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Th:Ls ch!~ca1. tx'eatme:n1!_1IhClJ.
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: if.. . ' A Comparative Study of t
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'j 437 petioles, now elongated,f'or
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Helisoma, Menetus, fhYSa andValvata
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i s. The benth1c populat1Q~ W¥", O
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443 Eurasian. wa~lfoil a W8t.f~~ ap
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Empb4sis was on testing DOD-volatil
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447 . , , -. I':'V'est~a.ti
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FIELDOBSERVATIONS UPONESTUARINE ANI
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more than 2 feet. ExceptionalUdes s
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TABLE1. Responseof oysters t~ diffe
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In the'Dundee Creek series. ,one of
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workers. springer (1961) cite8& num
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OBSERVATIONSONTHE OCCURRENCE' ANDPE
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461 TABLE! Chemical Water QuaU1?::r
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TABLEIII Threshold Taste and Odor C
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(1.1-) Burttschell, R.H. , et al.,
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Code A - seeded June 29 B - seeded
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SUIIIIJ~, ~ Conclusions 5' 469 The
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III. Average turf scores l' of thre
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474 PIft'J'OTOXICBlFBQTS'QJe'CBRTAI
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476 MERIONBLUEGBASS• T!BATANDsgD
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4BJ days follow:lng the ohemical tr
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') ') ' :_B!.ue~s•. Fescue au:l~"
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:". ',J P~E~ C!',. O~.C~G~S 'F.~HEM
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Lima and ferd'1izer applications sh
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4es 1'.o~~1ty, ", .ewf!r''''rsenc.
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} ) Table 1. Besu):ta.Qf 1961 pre-e
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492 corresponding plots on este.bl1
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494 ae.u!s,'I!IIDi,cua.:Lon leUllll
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496 D±!3pa,~n~ Resul te)I? .,l-ta,
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498 1 . 1 J. E. Gallagher and n. J.
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500 Da1;ejJ01 e~uations ~,a.;t'ollC
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502 TADLEIt Comparison of "severalc
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504 TADLE3: Pre-oemergence and poet
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506 Table 1. Re8eeding Resulte:afit
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5"8 d1propalin ortrifluralin 'at ':
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510 aUlIPIl iri '-1: ' D" "" Diphen
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Fall ve. spriif ~nts .. 'Ibe",obl1.
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514 ~ Tab1e2. Cr&bgraS$'Contr01 in
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516 ,';1:".i'"'f'!r": :~,j i: .. r
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. ~lS residual cemtrol of crabgrssi
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520 - . \.. ; ."," ,
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5~2 'rab4t13.· ~gtnc. ·QGabtiol:o
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524 PRE.._RGENCE AMU' POsT-EHERGENC
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526 Table 1. 'l'a):lsra,. ContrO.k1
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528 Pre- andpost ..emergejljCec:rab
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530 Prior to each chemical applicat
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u 532 3) Those trea.t,mellts which
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Table I (Coot'd) 27. JSc.F,~iOe t$~
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536 EXPERIMENTS ONTHECHOOCALCOIm'l)
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~______ , 53S Table 1: Control of c
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54' In a similar po st-ell1~rgence
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542 da~hal and diphenatrile) at ear
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.. ";' -:' il; JT!.: .'\ i~'J" ; ~J
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541 Distr:tbution of radioacti~tl t
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549 •RESULTS The distribution of
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GRAPHII: Comparison of the~.tl;'i~u
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"-...-.. J.4 The distribution of r~
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